How do you find an interference of a number?

If a-b = 80 and 3/5 = b/a then what is the value if a

Fourteen minivans, each holding the same number of students and one driver, set out for the spring track competition. On the way, 2 minivans broke down and were towed away for repair.

Which expression is irrational a. 8 over 5. b. square root of 4 c. square root of 10. d. square root of 64

A class is making 7 flags. It takes 3/4of a yard of felt to make each flag. The total number of yards of felt needed is between which two numbers? A. 1 and 2 B. 3and 4 C. 5and 6 D. 7and 8

The difference of 9 and the quotient of the number t and 6 is 5

in 1995, there were 12,000 students at Beacon High. In 2000, there were 12,250. What is the rate of change in the number of students

Between which two thousands is the number 36,219

Find all the values of x for which the function is differentiable. f (x) = (x^3-8) / (x^2-4x-5)

0.1629 nearest tenth (0.1) look at the 0.01 place.

A parallelogram has an area of 34.75 square centimeters. If its height is 5 cm, find the base. 2.5 cm 13.9 cm 6.95 cm 16.25 cm